Synonyms|331Antonyms|0|Broader|0Narrower|0Related|52

54 entries under insane topic. ×

2
mad as a March hare(expression, idiom, silly, foolish, mad)
2
mad as a hatter(expression, idiom, silly, foolish, mad)
2
mentally strange(expression, silly, foolish, mad)
2
nuts(silly, foolish, crazy, mad)
2
nutty as fruitcake(expression, idiom, silly, foolish, mad)
2
of unsound mind(expression, idiom, silly, foolish, mad)
2
out to lunch(expression, idiom, silly, mad)
2
potty(silly, foolish, mad, unwise)
2
screw loose(expression, silly, foolish, mad)
2
screwball(silly, foolish, mad, unwise)
2
screwy(silly, foolish, mad, unwise)
2
wacky(silly, foolish, mad, unwise)
1
cracked(verb, silly, foolish, crazy, mad)
1
daft(silly, foolish, mad, unwise)
1
demented(silly, foolish, hot, crazy, mad)
1
dingy(silly, foolish, mad, unwise)
1
erratic(silly, foolish, mad, unwise)
1
frantic(adjective, crazy, ill, sick, agitated)
1
frenzied(adjective, crazy, ill, sick, high)
1
idiotic(silly, foolish, mad, unwise)
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ChicagoSmart Define. 2015. "flipped thesaurus" https://smartdefine.org/flipped/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, flipped thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/flipped/thesaurus/synonyms>.
MLASmart Define. "flipped thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/flipped/thesaurus/synonyms>